<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>05_元素放大与过渡</title>
    <style>
        div{
            width: 100px;
            height: 100px;
            background-color: #F00;
            margin:100px auto 0;
            transition: all 1s;
        }
        div:hover{
            background-color: #0aa1ed;
            transform: scale(2);
            border-radius: 50px;
            transform: scale(2) rotate(720deg);
        }
    </style>
</head>
<body>
<div></div>
</body>
</html>